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There also other terms, here is a brief definition focused on differences:

Similarities: All of the terms concerns electronic format of biomedical and health informatics.

EPR = Electronic Patient Record. Usually pertains to the information which are collected during patient's stay in a specific medical facility.

EMR = Electronic Medical Record. At most complete level contains lifetime information of medical encounter of a specific patient. Consists of produced data from measurements and procedures. EMR is a collection of EPRs.

EHR= Electronic Health Record. In ideal state contains both EMR and all other health care information and issues related to the patient. e.g. Life style, habits, social history etc. Every things that may affect patient health.

Also emerging of new biologic and genetic technologies who make individuals' genome and proteom information, available and new integrative studies which try to link clinical findings to biological basis, is going to expand the concepts of EHR.

good evening sir,
presently I am pursuing Masters in Medical informatics, I was worked for 6 years as Medical records officer in 350 bedded hospital, now I am thinking to do a project on EMR implementation,
my question is -
1) What are the latest in and hot topics in EMR development?
2) how to select rite topic in EMR
3) is some programming language is must to know (i.e java, .ASP or oracle) ?

Selecting the hottest topics in EMR depends on your target and context. There are two contexts: 1- Industry 2- Academy and so many targets are possible. You can find at least a very topic of intersection of each target and contexts

It can help you a lot if you learn a programming language, off course it is not a must. If you are interested there are a plenty of factors to select proper language. I may suggest you to try for f#. a new language from microsoft .

Dear Abbas,
I am a MSc graduated and gonna introduce my PhD proposal. The main issue here is that I cant determine a suitable topic. I came from a medical background - BSc in medical radiology and MSc in health informatics - with a basic computer skills. I hope U suggest me some current topics where I look to work later in an educational university and making my private buisness.

Virus attacks are general system security issues. Viruses usually target system resources and processes and they are preventable by existing Anti virus applications. Security vulnerabilities of Medical Applications (M.A.) do not fall in this general categories. Usually attacks to medical applications are planned and more specialized for a specific software application and there is a wide range of these vulnerabilities: Designing a specialized worm or virus against a specific application, SQL injection, Compromising of database or system securities and many other possibilities.

There is no best solution but the best practice is to reduce security risks at each step, from OS installation to UI design.

There is an interesting issue on this topic, please visit following discussion for further informations: